title: 1,2:5,6-Di-O-iso-propyl-idene-3-C-methyl-α-d-allo-furan-ose.
abstract: The title carbohydrate, C13H22O6, is a derivative of d-glycose, in which the furan-osidic and iso-propyl-idene rings are in twisted conformations. The mean plane of the furan-osidic ring makes a dihedral angle of 70.32 (18)° with the mean plane of the fused iso-propyl-idene ring. The methyl groups in the other iso-propyl-idene ring are disordered over two sets of sites, with an occupancy ratio of 0.74 (6):0.26 (6). In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds into chains with graph-set notation C(5) along [100]. Weak C-H⋯O interactions also occur.
authors.affiliation: Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Niterói - RJ, CEP 24020-150, Brazil.
authors.forename: Luana da Silva Magalhães
authors.initials: Lda S
authors.lastname: Forezi
authors.forename: Marcos Moitrel Pequeno
authors.initials: MM
authors.lastname: Silva
authors.forename: Fernanda da Costa
authors.initials: Fda C
authors.lastname: Santos
authors.forename: Vitor Francisco
authors.initials: VF
authors.lastname: Ferreira
authors.forename: Maria Cecília Bastos Vieira
authors.initials: MC
authors.lastname: de Souza